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已知集合U={1, 2, 3, 4},M={1, 2},N={2, 3},则=____▲____.
已知集合U={1, 2, 3, 4},M={1, 2},N={2, 3},则(M∪N) = ▲ .
已知集合U={0,1,2,3,4},M={0,4},N={2,4},则∁U(M∪N)=________.